SNOW-1882338 Fix AST to_snowpark_pandas test in nop testing mode (#2863)

1. Which Jira issue is this PR addressing? Make sure that there is an
accompanying issue to your PR.

  Fixes SNOW-1882338

2. Fill out the following pre-review checklist:

- [ ] I am adding a new automated test(s) to verify correctness of my
new code
- [ ] If this test skips Local Testing mode, I'm requesting review from
@snowflakedb/local-testing
   - [ ] I am adding new logging messages
   - [ ] I am adding a new telemetry message
   - [ ] I am adding new credentials
   - [ ] I am adding a new dependency
- [ ] If this is a new feature/behavior, I'm adding the Local Testing
parity changes.
- [x] I acknowledge that I have ensured my changes to be thread-safe.
Follow the link for more information: [Thread-safe Developer
Guidelines](https://github.com/snowflakedb/snowpark-python/blob/main/CONTRIBUTING.md#thread-safe-development)

3. Please describe how your code solves the related issue.

Add logic to the no-op AST testing code to create a temp read-only table
for to_snowpark_pandas. This way `to_snowpark_pandas` works with both
`nop` mode and `local_testing_mode`.

Author: sfc-gh-vbudati

src/snowflake/snowpark/mock/_nop_connection.py

@@ -21,7 +21,10 @@
 from snowflake.connector.cursor import ResultMetadata
 from snowflake.snowpark._internal.analyzer.analyzer_utils import unquote_if_quoted
 from snowflake.snowpark._internal.analyzer.expression import Attribute
-from snowflake.snowpark._internal.analyzer.snowflake_plan import SnowflakePlan
+from snowflake.snowpark._internal.analyzer.snowflake_plan import (
+    SnowflakePlan,
+    PlanQueryType,
+)
 from snowflake.snowpark._internal.analyzer.snowflake_plan_node import (
     LogicalPlan,
     SaveMode,
@@ -120,6 +123,28 @@ def execute(
     ]:
         source_plan = plan.source_plan
 
+        if hasattr(source_plan, "execution_queries"):
+            # If temp read-only table, explicitly create it.
+            # This occurs when code such as to_snowpark_pandas is run where the Snowpark version of the table is
+            # cloned and then read.
+            from snowflake.snowpark.mock import TableEmulator
+
+            for plan_query_type, query in source_plan.execution_queries.items():
+                if query:
+                    query_sql = query[0].sql
+                    if (
+                        plan_query_type == PlanQueryType.QUERIES
+                        and "TEMPORARY READ ONLY TABLE" in query_sql
+                    ):
+                        temp_table_name = query_sql.split("TEMPORARY READ ONLY TABLE ")[
+                            1
+                        ].split(" ")[0]
+                        self.entity_registry.write_table(
+                            temp_table_name,
+                            TableEmulator({"A": [1], "B": [1], "C": [1]}),
+                            SaveMode.IGNORE,
+                        )
+
         if isinstance(source_plan, SnowflakeCreateTable):
             result = self.entity_registry.write_table(
                 source_plan.table_name,

src/snowflake/snowpark/mock/_nop_plan.py

@@ -6,6 +6,7 @@
 from typing import Any, Dict, List, Optional
 
 import snowflake.snowpark
+from snowflake.snowpark.mock import TableEmulator
 from snowflake.snowpark._internal.analyzer.analyzer_utils import unquote_if_quoted
 from snowflake.snowpark._internal.analyzer.binary_plan_node import Join
 from snowflake.snowpark._internal.analyzer.expression import (
@@ -117,6 +118,9 @@ def resolve_attributes(
         pivot_attrs.extend(pivot_result_cols)
         attributes = pivot_attrs
 
+    elif isinstance(plan, TableEmulator):
+        attributes = [Attribute(name, _NumericType(), False) for name in plan.columns]
+
     elif isinstance(plan, TableUpdate):
         attributes = [
             Attribute(name, _NumericType(), False)

tests/ast/data/Dataframe.to_snowpark_pandas.test

@@ -30,8 +30,10 @@ body {
     expr {
       sp_table {
         name {
-          sp_table_name_flat {
-            name: "table1"
+          name {
+            sp_name_flat {
+              name: "table1"
+            }
           }
         }
         src {